Minecraft is an independent game which has become massively popular over the past year – as of last month it had over 2,000,000 registered users and over 600,000 purchases. It’s a sandbox style game, where you build constructions out of textured cubes in a 3D world.
The shirt makes reference to the fact that after you wake up all alone in a gigantic world, the first thing you do is punch trees with your bare fists.
Sadly, I haven’t had a chance to play the game yet, but I know enough about it to find this shirt pretty amusing.
Check out this video too, if you want a basic intro to the game.